Mixer and governor for gas-engines.



PATENTED MAY 24, 1904.

L. H, NASH. MIXER AND GOVERNOR FOR GAS ENGINES.

APPLIQATION FILED MAR. 13. 1900.

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INVENTOR THE uunms PETERS co, mom uruon wAsu oYoN. up

No. 760,750. u I I PATBNTED MAY 24, 1904?? MIXER AND GOVERNOR FOR GAS ENGINES. I APPLIOATIQX FILED- MAR. 13. 1900.

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l atented May 24, 1904.

' LEWIS H. NASH, on SOUTH NORWA-LK',"CONNECTICUT, AssIeNoR TO! NATIONAL METERCOMBANY,.OF; NEW YORI N. Y., A CORPORA- TION OF .MIXER AND GOVERNOR Fi OEl G A'S-E N GINE S.

SPECIFICATION forming art of Letters Patent Nd. 760,750, dated May 24, 1904.

1'0 (tum/1 0111] it may concern.- '3

Beit known that I, Lewis NAs ,1a citizen of'jthe United States, andiaresident of South Norwalk, in thecounty of Fairlield and State of Connecticut, (whose post-olfice address is47 Elinwood avenue, South N orWalk,)'

- have invented a new and ImprovedMiXer and Grovernor forIGas-Engines, of which the'fol- .lowingis a full, clear, and exact description.

My invention relates to-an improvement in devices for controlling the proportions of -air and gas assupplied to gas-engines and'also to controlling the amountof; suchmixture supplied to the engine, and comprises the novel features which will be hereinafterdescribed. and particularly pointed out in claims. 1 i a Reference is to be had to the accompanying drawings, forming a part of thisspecification,

the line 2 2 of Fig. 1.

in which similar characters of reference'indicatecorresponding-parts in'allithe figures;

Figure 1 is asectional elevation of my de vice 'shown' attached to the frame of an engine, the section beingupon the line 1 l of Fig.2. Fig. 2 is a sectional elevation upon Fig. 3ris a sectional plan view taken on the line 3 3 of Fig. 2, and

l Fig. dis a sectional elevation taken upon the ever, presented as the onlypossible means by which my invention maybe carried out, but only as a means now adopted by-'me.'\

In Fig. 1 a portion of the frame of an en gine is shown 'at'A to which my device is at-.' tached. The mechanism for controlling the 'mixtureis contained within a' case BJ- This n iicason fi aimaah s;1900. .serialnastzvf (Noinodelfl caseh as achamber formed therein, to which thegassupply pipe is attached,Fig. 3. ,The chamber E is in communication by one end with the chamber G, from which, it receives v gas. The opposite end of the chamber E is in communication by its open end with a chamber D, which is a continuation of or connected with a chamber 'D, to which the air-supply connectionism'ade; The cylindrical chamberEis thus in communication at opposite ends, respectively, with the gas and air supply. Within the body of the case B is formed a chamber K, which is in communication with the chamber Eby'means of a long and narrow port, which is herein shown as rectangular in outline, al-

though this may be of otherform's, The chamber K .is' in communication withports C and Q, through which the mixed air and gas is con veyed to the engine cylinder or cylinders.

.The air-supplyv chamber D is alsoin direct communication with the chamber K by means of, a port tilj which is opposite the porta,

and preferably of the'same size therewith; The two opposite faces of'thechamber K, within which the twoports'e and d are formed, are vparallel with each other, forming valve-seats. 'Within this spaceand in close contact with both of these faces'is a valve H,

which may be moved so as to more'or less close the ports e'and' d, This valve is herein shown as being pivoted at one end upon a reduced section h, projecting eccentrically from a pin [2, which extends to the outside of the case and is provided with a screw-slot or other device by which it may be turned.

The endof the valve opposite its pivot is, supported upon and moved by a rod 1, which extends through the wall of thecase B and is .acted. upon by a governor J of. any suitable construction The valve H does not entirely fill thespace between the walls of the cham ber K, but permits the passage of the 'air and gas about its ends to beneath'the same, so thatthe valveis not influenced by the pressure or suctionof the gas. The valve isherein shown as having holesh passing through the samefthus affording free communi tio il pposite sides ther f; r

the line of the top of the ports and d, and

the center of the section it in line with the top edge of the valve, so that by turning the pin so as to raise or lower the end It, the proportion of gas and air may be varied by the governor acting under the influence of light and heavy load. If the pivot is raised, the proportion of gaswill be reduced under light load, and if it is lowered the proportion of gas will be increased under light load. This is due to the fact that with the valvepivot h on the line of the top edges of both valve and ports the port-openings remain triangles, and consequently wherever the partition F may be the relative areas of the port divisions thereby made remain constant.

The operation of my device is as follows: Air which is introduced to the chamber D passes through the port OZ into the chamber K, being controlled in amount somewhat by the Valve H. The air also enters the end E of the cylinder E and passes through that portion of the port 0 lying between the piston or diaphragm F and that end of the cylinder. This area will vary with the position of the piston or diaphragm. Gas entering the chamber G will enter the end E of the cylinder E and pass through that portion of the port a lying between that end of the cylinder and the position of the piston or diaphragm F. By adjusting the position of this diaphragm in the cylinder the proportion of air and gas supplied will be varied. It will thus be seen that the proportionate area of the air and gas supply ports may be adjusted to accommodate the device to varying conditions. For instance, if the quality of the gas should vary the position of the diaphragm might be adjusted so as to change the proportion of the gas used. It would also be possible to adjust the position of the dia phragm to accommodate the device to different relative pressures of gas and air. The action of the governor in raising or lowering the valve H will when the valve-pivot is on the line of the top edges of the valve and ports maintain the gas and air supply port areas at substantially the same ratio at all positions of the valve. This is due to the fact that the valve operates in identically the same manner upon both ports and both portions of the port,whieh are common to the gas and air supply. The rod F, which is connected with the piston or diaphragm F and by which it is moved, may be provided with a scale upon its outer portion, by which the position and the proportionate mixture of the air and gas may be changed. The gas being admitted through a port opposite an air-admission port, so that the incoming jets of air and gas are directed directly toward and impinge upon each other, a whirling action is at once set up which thoroughly mixes the two, thus promoting the perfect combustion of the gas.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. A mixing device for gas-engines, having a port provided respectively with air and gas supply connections at opposite ends thereof, and a common air and gas discharge port and a movable member controlling the division of said port between the air and gas supply, substantially as described.

2. A mixing device for gas-engines containing a chamber having air and gas supply connections to opposite ends thereof, and a common air and gas discharge port, and a piston or diaphragm movable in said chamber to control the division of said port between the air and gas supply.

3. Amixing device for gasengines,containing a cylinder having air and gas supply connections with opposite ends thereof and a common air and gas discharge port in its side, and a piston or diaphragm movable lengthwise said cylinder to control the division of the port between the air and gas, substantially as described.

4. An air and gas mixing device for gas-engines, having air and gas supply ports directly opposite of and facing each other, whereby their jets are directly commingled, a governor, and means for proportionately controlling the opening of said ports by said governor, substantially as described.

5. An air and gas mixing device for gas-engines, having air and gas supply ports facing each other,whereby their jets aredirectl y commingled, a common controlling-valve for said ports, and a governor connected with said valve to move it, substantially as described.

6. An air and gas mixing device for gas-engines containing parallel faces or walls havin therein air and gas supply ports located respectively in opposing faces to directly commingle the air and gas jets, a valve moving between said faces to control the port areas, and a governor connected with the said valve, substantially as described.

7 An air and gas mixing device forgas-engines containing parallel faces or walls having therein respectively air and gas supply ports, located respectively in opposite walls whereby the jets from air and gas ports discharge into each other, a valve movable between said faces to control the port areas, and a governor connected with and controlling the said valve, substantially as described.

8. An air and gas mixing device for gas-engines provideda with air and gas supplyports, I a valvecontrolling the opening of. both ofsaid ports, a governor connectedwith and controlling the amount of opening of said valve, and

means for adjusting said valve tovary the proportionate openings of the gas and air ports at different positions of thevalve, substantially,

as described, j 9. An air and gas IDIXlHgdGVlCG for gas-engines providedwithair and gas supply'ports,

a valve controlling the opening of both of said, ports, and means for adjusting said valve to vary the proportionate openings of gas and air ports at different positionsof the valve, substantially asdescribed.

10.. An all and gasm xing device for gasengines provided with air'and gas supply ports,

tially asdescribed.

a valve controlling the'op'ening of .both of said ports, a governor connected with and con-,- trolling the amount of opening of said valve,

and means for adjusting said valve to vary the proportionate openings of gas and airports at different positions of the valve,'and independent means for controlling the proportionate areas of air and gas supply ports, substan- 11. An air and gas mixing device for gasengines provided with air and gassupply ports, a valve controlling the opening of both of said ports, and means for adjusting said valve to vary the proportionate port-openings as between" the gas and air supply at diflierent positions of the valve, and independent means for controlling the proportionate areas of air and gas supply ports, substantially as described.

12. An air and gasmixing device for gasengines provided with a port havingair and gas supply connections respectively with 0p- 7 posite ends thereof, a movable memberconw trolling the division of said port between the air and gas supply, a valve controlling theopening of said port, and agovernor controlling said'valve, substantially as described.

13. An air and gas ,mixing devioefor gasenglnes provided with-a port having air and gas supply connectionsirespectively with opposite ends thereof, a""'movable member con-v trolling the-division of said port between the air and gas supply,- a valve controllingthe opening of said-port, a governor controlling said valve, and means for adjusting said valve to vary the proportionate openings of the air and gas portions of said port at different positionsof the valve, substantially as described. I 14. An air and gas mixing device for gas-Z engines having air and gas supply ports and a common controlling-valve therefor pivoted at one end, said ports being arranged at different distances from said pivot, substantially as described. v H

15. An air and gas mixing device for gas'-' engines having air and gas supply ports and a common controlling-valve therefor pivoted at one end, said ports being arranged at dif:

ferent distances from said pivot, and meansfor varying the relation of the pivotpoint and the margin of the-port, substantially as described.

16. An air and gas mixing device for gasengines, having air and gas supply ports, a common controlling-valve -therefor, and an eccentric pivot-pin for one end of said valve, said airand gas ports, being at different distances from-the pivot, substantially as de scribed.

17; An air and gas mixing device for gasa common controlling-valve therefor pivoted at one end, said po'rts being arranged at dif:

'ferent distances .from said pivot, and a governor connected with said valve to move it, substantiallya's described.

, engines, having air and gas supply ports and 7 18. An air and. gas mixing device forgas engines, having air and gas supply ports, a

common controlling-valve therefor, and" an eccentric pivot-pin for one end of said valve, said air and gas ports, being at different dis-v tances from the pivot, and 'a governor conpivot end may be adjusted laterally of-the directionl of the scribed;

20. v A mixing device for gas-engines having a port through different portions of which ports, substantially as de-v 21. A mixing device for gas-engines havingboth air and gas are admitted to the engine, .and adjustable means for dividing said port 10 5 between the air and gas supply.

a common air and gas supply port, and means for varying the proportionate area of said port used respectively for the gas and for theair supply. I i

22. A mixingdevice for gas-engines having a common air and gas supply port, adjustable means fol-dividing said port between the air and the gas supply, and independent meansfor varying the proportionate opening of the gas and air supply portions of said to a predetermined ratio.

23. A mixing devlce for gas-englnes having a common air and gas supply port, means for dividing said portbetween the air and the port according gas supply, and means for controlling the at different openings. 24:. 'A- mlxlng'device for gas-engines having a common air and gas supply port, means for dividing said port between the air and the gas opening of said port to varythe ratio between the air and the gas supply portions thereof' supply, a valve controlling the opening of said port, and means for varying the action of said available for theair and gas supply, and means for operating the valve to control the propertionate area of the air and gas, supply ports eitherat a constant or a variable ratio at different openings of the port.

26. Amixing device for gas-engines having a common air and gas supply'port; and adjustablemeans for dividing said port between the air and the gas supply without altering the area of the port.

27) A mixing device for gas-engines having a common air and gas supply port, adjustable 'meansfor dividing said port between the air and the gas supply without altering the area of the port,'and independent meansfor varying the opening of said port.

28; A mixing device for gas-engines comprising a chamber having a port in its walls through which both air'and gas are admitted to the engine, and adjustable means for dividing said port between the air and the gas supply.

29. The combination in a charge-controllin g mechanism for explosion-engines, of a governor and means operated by said governor for controlling the quantity of the charge in accordance with the speed of the engine, and means for adjusting the charge-controlling mechanism so that said governor also varies the richness of the charge at different cut-ofl's in either way from a constant ratio.

30. In a fuel-mixing device,the combination of an air-supply, a gas-supply, a volume-controlling device having a member provided with a port, and a partition or separating member arranged between the air-supply and the gassupply adjacent to said port, one of said members being adjustable with reference to the other for varying the proportions of air and gas, substantially as described.

111 testimony whereof I have signed my name to this specification in the presence of the two subscribing witnesses.

LElVlS H. NASH.

Witnesses:

H. L. REYNOLDS,

FRED S. KEMrnic. 

